
var url = require('url')
console.log(url.resolve('http://127.0.0.1/','course/test')) 

var querystring = require('querystring')

console.log(querystring.stringify({name:'ss',course:"123"}))


console.log(querystring.parse('name=ss&course=123','&','='))

querystring.escape('哈喽')
// querystring.unescape('哈喽')